Jump to content
SAU Community

FUEL! Optimax, Ultimate, or Synergy 8000

geno8r

By geno8r,
in R Series (R30, R31, R32, R33, R34)

 Share

Recommended Posts

geno8r Grand Master

geno8r

Posted
Posted

Hi

I'm getting my car dyno tuned very shortly and the mechanic asked me what fuel i usually run. I said optimax. He said that they tested fuels and for the best tuning results it was.

1. Ultimate

2. Synergy 8000

3. Optimax.

Now i've done a little searching around on the net and it seems that it's a fight between Synergy and Ultimate for the best tuning performance.

Now to be vehicle specific with skylines... Can any1 post what they've had their car tuned to and what their mechanic said about tuning with certain fuels.

Cheers,

  • Replies 46
  • Created
  • Last Reply

Top Posters In This Topic

Popular Days

Top Posters In This Topic

Popular Days

makaveli Mentor

makaveli

Posted
Posted

On 3 occaisions I have used Optimax and during all three my car ran like shit, It also caused my cat to stuff up.

I have used Ultimate and it seems great, although I always used Synergy without a doubt as its always been great with my car.

take it easy

Mark

clarkey Proficient

clarkey

Posted
Posted
Hi

I'm getting my car dyno tuned very shortly and the mechanic asked me what fuel i usually run.  I said optimax.  He said that they tested fuels and for the best tuning results it was.

1. Ultimate

2. Synergy 8000

3. Optimax.

Now i've done a little searching around on the net and it seems that it's a fight between Synergy and Ultimate for the best tuning performance.  

Now to be vehicle specific with skylines... Can any1 post what they've had their car tuned to and what their mechanic said about tuning with certain fuels.

Cheers,

Yeah thats probably the same order I'd use them as well. Ultimate is probably more difficult to locate but only optimax if I cant find the other two

sewid Grand Master

sewid

Posted
Posted

I always run Ultimate but will settle for Synergy 8000 if that's all I can find.

Optimax has given me less than good results. It's a shame though because it's easy to find where I live but I have to drive 5k's to get Ultimate :cheers:

Essential Community Regular

Essential

Posted
Posted

I have found Ultimate to be the best out of the

Ultimate vs Optimax battle..

I was once informed that Optimax is 'Up to 98 ron'

where as Ultimate 'Is 98 ron'

Anyway my advice is, pick a petrol and stick to it .. dont keep changing fuels or alternating between synergy and ultimate.

I have also found...

shit.. i forgot what i was going to say :cheers:

abcent Mentor

abcent

Posted
Posted

Currently using Synergy8000, was usung optimax for ages.....noticed the fumes (exhaust) did actually smell more, an the synergy8000 runs cleaner. Not really fussed between Mobil or BP 98 fuels, both seem to be a good product. But like most, only opt for Shell when have to.

fade Apprentice

fade

Posted
Posted

Never had any experience with synergy, but I have talked to a couple of people in the know and basically what I was told was that Ultimate is refined to get 98 ron and Optimax just uses additives to get 98 ron. For this reason the Optimax will lose ron faster then Ultimate.

FATGTS-R Experienced

FATGTS-R

Posted
Posted

Everything I have read on public forums indicates the ultimate fuel to be the superior product.

But for some reason I get a noticeable improvement in fuel economy with optimax. Approx. 1-1.5km/L better.

I have seen many people mention the arguments about the optimax being "up to 98ron" and that it has additives to raise the ron level and ultimate is refined to 98 ron.

Does anybody have any documentation or links on the web to support these claims?

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
 Share
Go to topic listing


  • Similar Content

  • Latest Posts

    • Rezz
      R35 GT-R production ends after 18 years

      By Rezz · Posted

      Order for the 2025 model R35 GT-R were accepted from 3rd March and 26th August the last order rolled off the production line at the Tochigi plant. Concerning the R35 GT-R replacement, current Nissan CEO Ivan Espinosa said "Nothing has been decided about the GT-R at this time, but we are well aware that everyone is waiting. The GT-R will evolve and reappear in the future. Please be patient until that day comes." Nissan has a lot of issues with management and finances so take Espinosa's words with a big grain of salt. From what discussions I've had and read about here in Japan, not a lot of people are confident about Nissan's future, let alone the next GT-R. 
    • Kapr
      ECU sees many times the speed than speedo does (R34 swap)

      By Kapr · Posted

      Thanks. We getting some parts along too so he will be solving the speed issue like next week so i will let you know what he came up with.   
    • MBS206
      R34 25GT Engine Light 21

      By MBS206 · Posted

      21 is explicitly the coils detected as the issue. Is it guaranteed the actual issue? No. Just the ECU thinks it is. When you say rattling, describe it better, get an audio clip as best you can if possible.
    • CF.Panda
      R34 25GT Engine Light 21

      By CF.Panda · Posted

      Yea got me coppers. Bad news is I just put them in and the car still has the light and shakes. I also noticed I hear like rattling coming from the exhaust piping right under me. Does 21 also have a possibility of being O2 sensors?   So, coil packs are good, the harness is good, the MAF is working, and obviously the spark plugs just replaced and working.
    • MBS206
      RB25DE NEO with Haltech ECU

      By MBS206 · Posted

      Make sure you drop the GTT base tune back in, and set your injectors again, this will remove anything playing up with it you may have removed. Possibly lean there as it's normally a fast transient going THROUGH atmospheric pressure, and a turbo motor would then quickly go richer as boost builds. The only worry you MIGHT have is ignition timing, as the DE is higher compression than the DET from memory. But again, you're not in boost, so the DE motor will be a lot more forgiving at atmospheric.   Get Murray, Kinkstahs, and Johnny's input on tuning haltechs, those guys have played with tuning enough in the past to be able to help now you're past the trouble shooting stage of the MAP issue
×
×
  • Create New...